Question

some people use image recognition apps. these apps let you find out about a specific object. lets say you take a picture of the statue of liberty. an image recognition app will recognize it and give you information about it. people also use location-based apps. these apps are similar to GPS navigation apps because they show where you are in real time. these apps are useful when traveling in an unfamiliar place or meeting a friend. every day, more smartphone apps are created. and they will continue to inform and entertain us wherever we are. the telephone will never be the same.
highlight the sentence that helps you understand when location-based apps are useful to people

Answer 1

"these apps are useful when traveling in an unfamiliar place or meeting a friend."